several tax cuts could also end if the cliff is not avoided, meaning about $3,500 more in taxes for the average household. >>> american university is warning students to be on alert after a string of incidents where a man has groped students near campus. there have been four reported incidents in the last week. the most recent one happened sunday night on massachusetts avenue. police say the suspect comes up from behind, grabs girls inappropriately, and then runs away. >> i normally feel really safe around here. i'm not in the city or anything. that's a little bit terrifying. >> something's got to be done. i mean, it's definitely uncalled for and not okay. >> au sent an e-mail to students to alert them about the attacks. the university is asking the students to walk in groups and only in well-lit areas. >> 6:06 right now. today marks the tenth anniversary of the sniper killing spree. the first attack happened in a parking lot in wheaton, maryland. in all, ten people were killed, three others were wounded in a three-week stretch that terrified the d.c. region. police eventually arrested